Diffuser for lighting fixture



FIG. 1 is a perspective view of a first embodiment of the diffuser for lighting fixture showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a perspective view of a second embodiment of the diffuser for lighting fixture of the new design. 

The ornamental design for a diffuser for a lighting fixture, as shown and described. 